I'm surprised that there isn't a Michael Giles thread here. I guess it's because he doesn't have a large body of work and is more of an ideas than a groove player, but his drumming on King Crimson's first two albums was pretty amazing.
He was one of the early overplayers, like a jazzy Keith Moon at times, and he definitely likes his high-tuned snare to be heard! But he's put in some stunning performances with loads of imagination and sense of occasion:
And of course Schizoid Man